You are now the administrator of a local hospital, and your first project is to research the quality of meals for patients prepared by the food service department.To do this, he conducted a survey for 10 days presenting a simple questionnaire to 400 patients with each meal, asking them to mark whether the meal had been satisfactory or unsatisfactory.For simplicity in this problem, suppose the response was 1,000 questionnaires returned from 1,200 meals each day.The results are the following:

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Topic Video
Question
100%

You are now the administrator of a local hospital, and your first project is to research the quality of meals for patients prepared by the food service department.To do this, he conducted a survey for 10 days presenting a simple questionnaire to 400 patients with each meal, asking them to mark whether the meal had been satisfactory or unsatisfactory.For simplicity in this problem, suppose the response was 1,000 questionnaires returned from 1,200 meals each day.The results are the following:

 

Sample sample size Number of unsatisfactory foods
dic-01                                      1,000 74
dic-02                                      1,000 42
dic-03                                      1,000 64
dic-04                                      1,000 80
dic-05                                      1,000 40
dic-06                                      1,000 50
dic-07                                      1,000 65
dic-08                                      1,000 70
dic-09                                      1,000 40
dic-10                                      1,000 75
Total                                    10,000 600
 

 

A)Determine the p bar, Std deviationp, UCL, and LCL based on the questionnaire results, using a confidence interval of 95.5 percent.

B) P Bar: 
Standard Deviation: 
UCL: 
LCL: 

C) Is the process in or out of statistical control?

Create a p-chart based on the results of the questionnaire, using a 95.5% confidence interval

Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 4 steps with 7 images

Blurred answer
Knowledge Booster
Data Collection, Sampling Methods, and Bias
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman